Ratio of depth of flow to diameter of pipe. Determine the flow rate and velocity of the sewage pipe with diameter of 800mm and has a slope of 0.0017 and its running 60% full. Assume the roughness coefficient is 0.015. 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 Manning Chart Design Quantity of flow' Area of flow 0.1 0 0 0.1 0.2 0.3 Velocity 0.9 1.0 1.1 1.2 1.3 0.4 0.5 0.6 0.7 0.8 Ratio of hydraulic elements, partial flow to full flow, 9 a OV A